Matrix-drying press.



M. S. BENTLEY.

MATRIX DRYING PRESS.

APPLICATION FILED FEB.4,1908.

Patented May 11, 1909 55jparts shown in o rative relation to, each UNITED STATES PATENT OFFICE.

MATRIX-DRYING rnEss.

Specification of Letters Patent.

Patented May 11, 1909.

Application filed, February 4, 1908. Serial No. 414,188.

To all whom it may concern:

Be it known that I, MARCUS BEN'rLn a citizen of the United States, residing at Los Angeles, in the ceuntyof Los Angeles and State of California, have invented new and, useful Improvements in Matrix-Drying Presses, of which the following is a specification. 1- l This imiention relates to. a drying press 10 for stereotype matrix plates andthc' prii'ne object thereof is to provide means for quickly and thoroughly exhausting the n1oisture from the matrix sheets after they have been formed in the usual press. Heretofore inat-rix d1 in'g pres s have been utilized in which t ematri sheet'is covered with ablanket of some absorbent fabric and the whole placed under pressure and under the action of steam heat. The temperature"attained by the steam heat is sufficient lZO SlQWl drive the-moisture from. the matrix into t e blanket but there is no meansjatl'orded for drying the blanket and the same becomes wet with the moisture from the matrix sheet. This moisture held by the blanket renders it impossible to thor-' oughly dry the matrix and also increases the time occupied by theydrying process to v 5 such an extent thatlit takeslonger to merel ry the matrixsheet than it takes for al the remaining "opera'tions from the time the forfn is brought intothe' stereotype room to the time when the finished stereotype "plates aref'put upon the press. ly'Iyfinvention consists of a means to exg haustthe moisturefrom the blankets so that the .blankets are kept dry- )and always'in a 3 condition to absorb -the moisture from the matrix sheet so that the-matrix is'dr-ied quickly andthoroughly;

I accomplish the above b means of the device, described herein'and i lustrated in the accompanying drawings, in which I v Fi' ure 1,' is a perspective view of a matrix' rying press embodying my. invention,

being shown in its 0 on or operative position. Fig. 2, is a ongitudinal section of the "same in its operativeposition. Fig. 3,- is a perspective .view of the exhaust plate employed in applying nay-invention to the fiusual matrix drying press now in use. ,f y 4,. is an enlar ed perspect ve detail of one, corner oft-hep ates shown in Fig. 3." Fig.

5 ,-'is an enlarged sectional detail o f the other in Fig. 2. ig 6,-*is a perspective view of another form of exhaust plate; Fig. 7 is a perspective detail illustrating a typical means em loyed when the exhaust plate is embodied in the platen of the press. Referring to the drawings 10 designates .t-hebase of a matrix drying press of usual construction which is hollow and is provided with inlet and outlet steam pipes 11 by means of which steam under pressure may be admitted to the hollow base to heat the; same and any articles which may be placed thereon. This base is preferably supported. by legs 12 and is provided witha yoked frame .13 bolted to its upper face which carries a screw threaded spindle 14 at its center having a hand wheel 15' on its upper end and a "plate 15 on/ its lpwer end.

Bolted or otherwise secure to'the lower face of plate 15 is an exhaust p'late'l6 which is provided on' its upper surface with a plurality of transverse rooms 17 crossed and connected to each 0 her by a plurality of longitudinal grooves 18 which are slightly larger and deeper v 1 I coves. A plurality of spaced holes' 19 end from the lowersurface of the .plate to these grooves,vpreferably emerging on the sides of the grooves and not in'the bottom .thereof. The grooves -are preferably V-' shaped in cross section and the connecting 1 holes or ports, preferably staggered, 'connect with th'egrooves onalternate sides of than the transversethe bottom. By'this construction any water v of condensation collects in the bottoms of the grooves and cannot. pass back; through ports 19 but will flow out of caves 17 into -longitudina l grooves ls'which are deeper forthis particular purpose. Longitudinal grip/vo s 18 are connected together in" any suitable manner as by a groove '20 and an exhaust pipe 21 is connected to both.

being connected to any suitable source of exhaust. means (not shown Thus the pressure platen is preferably ormed of twomembers with When the twolmembers are secured to other a'platen is formed which is provide with -interior passages or channels, these channels being connectedby filorts to the pressure face of? the plat-em. I

merely for 1convenience in manufacture, the principle 0 the interior channels remain" uig the same whether the platen is madein thls manner or as in the modified form q shown in Fig-7. In this form the channels are i:f 0rmed by holes 30 dun sgrooves in the face of one.

is construction is.

through the platen, 1ports 19 connecting the pressure face to ho es 30. These pass'directly t0 the edge of the platent and exhaust toatmosphere without the aid of any exhaust means. In this regard, exhausting direct to atmosphere, I have shown in Fig. 6

amodified form of bottom plate 16 in which the grooves 17 run directly to one edge without the intervention of an longitudinal grooves as at 18 in Fig. 3. T e wet matrix 25 and the type form 26 are placed upon' the s cam-heated base 10 of thepress and a b anket 27 is placed ,over the same, the exhaust late being screwed down tightly upon t e blanket. The exhaust is then started and the moisture in the matrix is rapidly converted into steam. which passes into the blanket and is exhausted therefrom through ports 19 as fast as it is emitted from the matrix. Thus all the moisture is quickly taken from the matrix and the blanket is. also kept. comparatively ,dry,

forming in this'case merely a distributing medium between the matrix and the exhaust plate ratlier than an absorbent medium as in the usual operation.

Having described my invention what I claim as new and desire to secure by Letters Patent is 1. In a matrix drying press, a platen provided with a plurality of exhaust passages leading from its pressure face to one of its edges;

2. In a matrix drying press, an interiorly table, a platen operatively disposed on said table, said platen composed of an upper and "a-lower member, said lower member-provided with a series of channels on itsupper face, said channels provided with ports communicating w th the pressure face of the platen.

5. In a matrix drying press, a platen provided with channels in its interior,'the channels ha ving inclined bottoms, and said platen being, further provided with exhaust )orts leading from the pressure face of said platen to the' inclined sides of the channel bottoms;

In witness that I claim the foregoing I have hereunto subscribed my name this 27th day of January, 1908.

MARCUS S. BENTLEY.

Witnesses:

EDMUND A. STRAUsE, OLLIE PALMER. 

